Sanders' representation at the table could ultimately convince the party to adopt a number of campaign ideas that the senator has championed. Possibilities include a $15-an-hour federal minimum wage or a more strict stance on environmental regulations.

A DNC statement released on Monday noted that the delegation process was designed to make it "inclusive," pointing out that party rules allow Wasserman Schultz to dictate who is allowed to shape the party platform.

She said:

We are delighted to bring together this talented group of Democrats. These individuals represent some of the best progressive thinking from across the nation. I am confident that the members of this committee will engage Americans in a substantive dialogue of ideas and solutions that will inform our Party Platform.

We believe that we will have the representation on the platform drafting committee to create a Democratic platform that reflects the views of millions of our supporters who want the party to address the needs of working families in this country and not just Wall Street, the drug companies, the fossil fuel industry and other powerful special interests.

Though Clinton maintains a virtually insurmountable lead in pledged delegates, so-called superdelegates, and popular votes, Sanders reiterated over the weekend that he would continue to stay in the primary until the convention.

The announcement comes as some Democrats are concerned that Sanders' apparent commitment to stay in the race is perpetuating a divide that could hurt Clinton in a general-election matchup with presumptive Republican nominee Donald Trump.